Mars

New discoveries show that Mars may have once been habitable

A recent study using data from NASA’s Curiosity rover and published in theĀ Proceedings of the National Academy of SciencesĀ present data showing the presence of nitrates on Mars. This molecule, composed of one nitrogen and three oxygen atoms, may indicate that there was once a nitrogen cycle on ancient Mars, one of the necessary mechanisms on a planet to sustain terrestrial-like …